This Chapter appraises the range and depth of Patrick Glenn’s scholarly legacy by exploring some of the many lessons that can be drawn from his opus magnum Legal Traditions of the World. To this purpose, the chapter will focus on three key notions underlying Glenn’s chefs-d’œuvre: Law, Tradition, and Conciliation. The argument is that Glenn’s findings have in multiple ways enlightened the understanding of what the law is (outside and also inside the West), as well as the relentless dynamics within and between legal traditions. Through these findings, Glenn has also provided us – his friends, colleagues, readers – with a powerful intellectual tool to pursue his conciliatory dream towards a world of tolerance and diversity.